<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>标题</title>
</head>
<body>
<h1>标题</h1>
<div>
{#    可以理解成占位符#}
        {% block content %}{% endblock %}
</div>
<h2>底部</h2>
</body>
</html>